10
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Agronomie evaluation and clonal selection of ginger genotypes (Zingiber officinale Roseoe) in Brazil Translated title: Evaluación agronómica y selección clonal de genotipos de jengibre (Zingiber officinale Roscoe) en Brasil

      research-article

      Read this article at

      SciELO
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          ABSTRACT The analysis of the genetic diversity of ginger based on agronomic traits is essential to know its performance and to design breeding programs. In this study, we analyzed the phenotypic variability of 61 accessions of the ginger germplasm collection of the "Luiz de Queiroz" College of Agriculture at the University of Sao Paulo (ESALQ/USP) in a complete randomized block design with four replications. An analysis of variance test was performed and genetic parameters such as heritability, genetic variance, environmental variance, genetic-environmental variation ratio (CVg/CVe) and genetic correlations were estimated. There were highly significant differences (P≤0.01) among the accessions for all the agronomic traits analyzed. The CVg/CVe ratio (>1), along with the high heritability (>80%), showed a significant contribution of genetic factors on the phenotypic expression of plant height, rhizome thickness and yield traits, favoring the clonal selection of genotypes. Accessions Gen-29, Gen-29, Gen-32, Gen-36, Gen-37, Gen-40, Gen-41, Gen-42, Gen-50 were selected due to the best agronomic performance when compared to the rest of the germplasm. The results obtained may be useful in future breeding programs in Brazil.

          Translated abstract

          RESUMEN El análisis de la variabilidad genética del jengibre (Zingiber officinale) con base en características de importancia agronómica es esencial para conocer su potencial productivo y direccionar correctamente programas de mejoramiento genético. Este estudio evaluó la variabilidad fenotípica de 61 accesiones del banco de germoplasma de jengibre de la Escuela Superior de Agricultura Luiz de Queiroz/Universidad de Sao Paulo (ESALQ/USP), utilizándose un diseño experimental de bloques completos al azar (BCA) con cuatro repeticiones. Para orientar el proceso de selección se realizó un análisis de varianza y se estimaron algunos parámetros genéticos tales como heredabilidad, varianza genética, varianza ambiental, relación entre el coeficiente de variación genético y ambiental (CVg/CVe) y correlaciones genéticas. Se presentaron diferencias altamente significativas (P≤0,001) entre las accesiones para todas las características agronómicas analizadas; la relación CVg/Cve (>1), en conjunto con la alta heredabilidad (>80%), mostró que hubo una importante contribución de los factores genéticos en la expresión fenotípica de los caracteres altura de planta, espesor del rizoma y rendimiento, favoreciendo la selección clonal de genotipos. Las accesiones Gen-05, Gen-29, Gen-31, Gen-32, Gen-36, Gen-37, Gen-40, Gen-41, Gen-42, Gen-43, Gen-44 y Gen-50 fueron seleccionadas por presentar el mejor desempeño agronómico al ser comparadas con el resto del germoplasma. Los resultados obtenidos en este estudio podrán ser útiles en futuros programas de mejoramiento genético y promoverán la producción de este cultivo en Brasil.

          Related collections

          Most cited references31

          • Record: found
          • Abstract: not found
          • Article: not found

          Analysis of Genetic Diversity in Crop Plants—Salient Statistical Tools and Considerations

            • Record: found
            • Abstract: found
            • Article: not found

            The evolutionary ecology of clonally propagated domesticated plants.

            While seed-propagated crops have contributed many evolutionary insights, evolutionary biologists have often neglected clonally propagated crops. We argue that widespread notions about their evolution under domestication are oversimplified, and that they offer rich material for evolutionary studies. The diversity of their wild ancestors, the diverse ecologies of the crop populations themselves, and the intricate mix of selection pressures, acting not only on the parts harvested but also on the parts used by humans to make clonal propagules, result in complex and diverse evolutionary trajectories under domestication. We examine why farmers propagate some plants clonally, and discuss the evolutionary dynamics of sexual reproduction in clonal crops. We explore how their mixed clonal/sexual reproductive systems function, based on the sole example studied in detail, cassava (Manihot esculenta). Biotechnology is now expanding the number of clonal crops, continuing the 10 000-yr-old trend to increase crop yields by propagating elite genotypes. In an era of rapid global change, it is more important than ever to understand how the adaptive potential of clonal crops can be maintained. A key component of strategies for preserving this adaptive potential is the maintenance of mixed clonal/sexual systems, which can be achieved by encouraging and valuing farmer knowledge about the sexual reproductive biology of their clonal crops.
              • Record: found
              • Abstract: not found
              • Article: not found

              Genetic resources of Curcuma: diversity, characterization and utilization

                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                agc
                Agronomía Colombiana
                Agron. colomb.
                Universidad Nacional de Colombia, Facultad de Agronomía (Bogotá, Distrito Capital, Colombia )
                0120-9965
                December 2017
                : 35
                : 3
                : 275-284
                Affiliations
                [1] Piracicaba orgnameUniversidade de São Paulo Brazil
                Article
                S0120-99652017000300275
                10.15446/agron.colomb.v35n3.62454
                6ca5977f-ed7b-43f4-b8cf-5949318db65b

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : 04 February 2017
                : 31 October 2017
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 41, Pages: 10
                Product

                SciELO Colombia

                Categories
                Plantbreeding, genetic resources and molecular biology

                germoplasma,desempeño agronómico,phenotypic variability,genetic parameters,selection,germplasm,agronomic performance,variabilidad fenotípica,selección,parámetros genéticos

                Comments

                Comment on this article

                Related Documents Log